When you are truely inside of a depressive episode, all those tips probably won't help you. By definition, you cannot think straight.
Think of it more like a computer game: As long as everything is okay, you should make sure to save your progress. While you are feeling good, try to minimize the effect of an episode. This way the episode itself also becomes less bad.
This could be: Getting a cleaning lady (edit: or cleaning gentleman), setting up your bills to be paid automatically, saving money. Stuff you should do anyway, whether you have had depressive episodes or have not. Just setting up your life, so it can be slowed down a bit once in a while without catastrophic outcomes.
For me the logical consequence is to adopt minimalism, so there is less stuff potentially dragging you down with it, once things turn bad.